CN205443958U - Composite truss support of big cantilever bent cap - Google Patents

Composite truss support of big cantilever bent cap Download PDF

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Publication number
CN205443958U
CN205443958U CN201620167768.2U CN201620167768U CN205443958U CN 205443958 U CN205443958 U CN 205443958U CN 201620167768 U CN201620167768 U CN 201620167768U CN 205443958 U CN205443958 U CN 205443958U
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CN
China
Prior art keywords
bent cap
entablature
pillar stand
horizontal
roof truss
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201620167768.2U
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Chinese (zh)
Inventor
张辉
姚宏生
张云富
李永红
李增山
代建南
董绪旺
祁攭杰
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China Construction Sixth Engineering Division Co Ltd
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China Construction Sixth Engineering Division Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to CN201620167768.2U priority Critical patent/CN205443958U/en
Application granted granted Critical
Publication of CN205443958U publication Critical patent/CN205443958U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a composite truss support of big cantilever bent cap, adopt batten plate lattice formula composite truss support, whole stake body owner will be divided into landing leg down, composite truss, the distribution roof beam, 5 modules on sand box and the tripod bracket, utilize channel -section steel and bolt with 5 modules by connecting gradually into a whole on going during the installation, below 4 the lattice formula stands of 2 modules on by the cushion cap constitute, crossbeam between stand and last stand is the bottom end rail down, it is used for the distribution roof beam that supports bent cap triangular bracket and set up work platform to lay according to support vertical rod spare position on the entablature, square sand box setting is between distribution roof beam and triangular bracket, and the bracing is articulated with the pin with entablature and bottom end rail end, all connects with horizontal horizontal -associate between the bracing of back in the front simultaneously, welds crossbeam horizontal -associate and bracing between the entablature and between the bottom end rail. The utility model discloses effectively has solved the support and has supported to on -the -spot and basic reliance, simple structure, dismouting are fast, among the actual operation security high, can cyclic utilization etc. Characteristics.

Description

A kind of composite roof truss support of great cantilever bent cap
Technical field
This utility model relates to Bridge Construction field, the composite roof truss support Design of a kind of great cantilever bent cap of construction in soft foundation and construction method thereof.
Background technology
In day by day flourishing transportation network, due to the increase year by year of freight volume, transportation network is the most perfect, and newly-built circuit is increasing.In the overall Alignment Design of urban viaduct, in order to overcome impact current under ground complex situations and bridge, usually use the version that cantilever bent cap bridge pier and prestressing force prefabricated small box girder combine.For highway, two ends less cylinder pier of encorbelmenting is the most, and this kind of form is from being designed into construction technology comparative maturity.In recent years, Expressway Design is the most perfect therewith, long cantilever Prestressed Slab Beams engineering also gets more and more, associated construction technique there is no the experience of maturation at home and is available for using for reference, associated construction technology is urgently studied, and utilize the construction of conventional bracket method ground must be carried out cure process on soft foundation, thus add construction cost.
Utility model content
This utility model provides composite roof truss support and the construction method thereof of a kind of great cantilever bent cap of construction in soft foundation, efficiently solve support to support for on-the-spot and basic dependence, this support have simple in construction, dismounting speed fast, without carrying out in ground hardening process, practical operation the features such as safety is high, can recycle, saved cost greatly.
Technical solution adopted in the utility model:
A kind of composite roof truss support of great cantilever bent cap, use batten plate lattice composite roof truss support, whole strutting system is broadly divided into lower supporting leg, composite roof truss, distribution beam, sandbox and 5 modules of three footrest framves, utilize channel-section steel and bolt that 5 modules are in turn connected into an entirety from down to up during installation, 2 modules are made up of 4 lattice columns on cushion cap below, column divides lower pillar stand and upper pillar stand, crossbeam between lower pillar stand and upper pillar stand is sill, crossbeam above upper pillar stand is entablature, entablature uses 40 pairs of I-steel assembly weldings, lay for supporting bent cap shelf bracket and arranging the distribution beam of work platforms by support vertical bar position on entablature;Square sandbox is arranged between distribution beam and shelf bracket, shelf bracket is arranged above bent cap bed die, diagonal brace is passed through with pin hinges in entablature and sill termination, all connect with horizontal horizontal-associate between front-back diagonal brace simultaneously, and bridging is set, welding beam horizontal-associate and diagonal brace between front-back entablature and between sill.
Described distribution beam is made up of 18a I-steel
Described lower pillar stand uses 32c channel-section steel Combination Welding, and upper pillar stand uses 22b channel-section steel Combination Welding, uses [14 channel-section steel transverse upright horizontal-associates connections between front-back upper pillar stand and between lower pillar stand.
Described sandbox planar dimension is 35cm × 35cm, and regulation altitude range is 22~32cm.
Described diagonal brace, horizontal-associate and bridging, sill and crossbeam horizontal-associate and diagonal brace are [28 double flute steel.
The construction method of the composite roof truss support of a kind of great cantilever bent cap, comprises the following steps:
(1) cleaning cushion cap: cushion cap end face foreign material are cleaned out before installing by support, it is ensured that under support, supporting leg can directly contact with cushion cap and ensure that support force is stable;
(2) determining support height: determine the assembled scheme needing to install supporting leg according to pier stud design height, supporting leg has height for tri-kinds of models of 2m, 1m and 0.3m;
(3) under, supporting leg is installed: according to supporting leg assembled scheme determined by calculating, the supporting leg of 2m height is first installed, when residual altitude is less than 2m, 1m and 0.3m supporting leg is installed again, available truck crane is installed leg sleeve be contained on pier stud, again its plan-position is finely adjusted, position is filled in fixing between supporting leg and pier stud with timber wedge after determining, upper and lower two joint supporting legs are connected with;
(4) composite roof truss is installed: lifted to supporting leg by a piece of composite roof truss whole utilization truck crane assembled in advance, with chain block, it is fixed with pier stud temporarily, after treating that 2 composite roof trusses all lift to supporting leg, channel-section steel and bridging is utilized to be connected by 2 composite roof trusses fixing.
(5) distribution beam is installed: the distribution beam on entablature is placed at each vertical supporting of shelf bracket, 3 side by side, and every distribution beam length 4.5m, by using Φ 25 fining twisted steel to coordinate between distribution beam with entablature, [10 channel-section steel pressing plates lock.
(6) sandbox is installed: sandbox installation site is arranged according to drawing, prevents sandbox from breakking away, distribution beam uses L50 × 50 angle steel welding locating slot, sandbox is put into locating slot.
(7) lay-up operation platform: for easy construction, ensure construction safety, in distribution beam, direction across bridge lays 5cm solid wood as operation platform, at distribution beam two ends welding short steel rod, beam to be allocated plugs steel pipe after laying, steel pipe height is 1.5m, laterally arranges cross bar together every 30cm, uses protection network enclosing outside railing.
(8) installing spider: for accelerating speed of application, bent cap bed die lower carriage uses that [the double limb Combination Welding truss of 14 channel-section steels, because bent cap casts anchor groove stretch-draw needs, every side wing edge uses two plate racks, middle reserves stretch-draw space.Monolithic lifting during installation, [as bridging and crossbeam, position is arranged at truss vertical rod 14 channel-section steels, uses pin to connect in employing after two panels is the most in place.
The beneficial effects of the utility model are:
(1) using composite roof truss construction, its lower pillar stand directly stands on cushion cap, it is not necessary to carry out based process.
(2) because of without basement process, the most cost-effective, shorten the Coping Construction cycle again.
(3) after construction component truss used can carry out on-site consolidation, carrying out modularity dismounting, speed of application is greatly improved.
(4) support is bound by horizontal-associate with pier stud, and whole structural stability is good, safety coefficient is high.
(5) whole strutting system all uses rigid material and being to be rigidly connected, and is supported on cushion cap, thus whole strutting system install after without sedimentation.
(6) this support is processed into modularity, all can be able to apply for after differing heights pier stud regulation height of landing leg.
(7) when using this strutting system to construct, only need to be equipped with a 25t truck crane and 2~4 workmans, save artificial.
(8) this support can be recycled, and turnover is convenient.
Accompanying drawing explanation
Fig. 1 is overall positive elevational schematic view after composite roof truss strutting system of the present utility model is set up.
Fig. 2 is that composite roof truss support entablature distribution beam of the present utility model locks scheme of installation.
Fig. 3 is composite roof truss strutting system supporting leg scheme of installation of the present utility model.
Wherein: 1 cushion cap;2 column horizontal-associates;3 pier studs;4 bent cap bed dies;5 lower pillar stands;6 sills;7 pins;8 crossbeam horizontal-associate and diagonal braces;9 distribution beam;10 diagonal braces;11 upper pillar stands;12 horizontal-associates;13 bridgings;14 entablatures;15 sandboxes;16 shelf brackets;17 fining twisted steels;18 pressing plates;: 19 nuts;20 timber wedge.
Detailed description of the invention
With specific embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.
nullOf the present utility model a kind of composite roof truss support of the great cantilever bent cap of construction in soft foundation as shown in Figure 1,This composite roof truss strutting system uses batten plate lattice composite roof truss Support Method,Whole strutting system is broadly divided into lower supporting leg、Composite roof truss、Distribution beam 9、Sandbox 15 and 165 modules of three footrest framves,Utilize channel-section steel and bolt that 5 modules are in turn connected into an entirety from down to up during installation,2 modules are made up of 4 lattice columns on cushion cap 1 below,Column divides lower pillar stand 5 and upper pillar stand 11,Lower pillar stand 5 uses 32c channel-section steel Combination Welding,Upper pillar stand 11 uses 22b channel-section steel Combination Welding,With [14 channel-section steel transverse upright horizontal-associates 2 connect between column,Crossbeam between lower pillar stand 5 and upper pillar stand 11 is sill 6,Upper pillar stand 11 crossbeam above is entablature 14,Entablature 14 uses 40 pairs of I-steel assembly weldings,Lay for supporting bent cap shelf bracket 16 and arranging the distribution beam 9 that the 18a I-steel of work platforms is made by support vertical bar position on entablature 14;For carrying out capping beam template height fine adjusting function, arranging square sandbox 15 between distribution beam 9 and shelf bracket 16, sandbox 15 planar dimension is 35cm × 35cm, and regulation altitude range is 22~32cm;Shelf bracket 16 is arranged above bent cap bed die 4, for preventing entablature 14 end portion downwarp excessive, use [28 double flute steel diagonal braces 10 by entablature 14 with [28 double flute steel sill 6 terminations are hinged with pin 7, simultaneously all with [the 28 horizontal horizontal-associates of channel-section steel 12 connect between front-back diagonal brace 10, and bridging 13 is set, weld [28 channel steel cross beam horizontal-associates and diagonal brace 8 between front-back entablature and between sill.
A kind of construction method of the composite roof truss support of the great cantilever bent cap of construction in soft foundation, comprises the following steps:
(1) cleaning cushion cap: support needs to clean out cushion cap 1 end face foreign material before installing, it is ensured that support supporting leg can directly contact with cushion cap 1 and ensure that support force is stable.
(2) determining support height: determine the assembled scheme needing to install supporting leg according to pier stud 3 design height, supporting leg has height for tri-kinds of models of 2m, 1m and 0.3m.
(3) under, supporting leg is installed: according to supporting leg assembled scheme determined by calculating, the supporting leg of 2m height is first installed, when residual altitude is less than 2m, 1m and 0.3m supporting leg is installed again, install, leg sleeve is contained on pier stud 3 by Shi Liyong truck crane, then is finely adjusted its plan-position, and position is filled in fixing with timber wedge after determining between supporting leg and pier stud 3, as it is shown on figure 3, upper and lower two joint supporting legs are connected with.
(4) composite roof truss is installed: lifted to supporting leg by a piece of composite roof truss whole utilization truck crane assembled in advance, with chain block, it is fixed with pier stud 3 temporarily, after treating that 2 composite roof trusses all lift to supporting leg, channel-section steel and bridging 13 is utilized to be connected by 2 composite roof trusses fixing.
(5) distribution beam is installed: the distribution beam 9 on entablature 14 is placed at each vertical supporting of shelf bracket 16,3 side by side, the every long 4.5m of distribution beam 9, for ensureing support monolithic stability, by using Φ 25 fining twisted steel 17 to coordinate between distribution beam 9 with entablature 14, [10 channel-section steel pressing plates 18 lock, as shown in Figure 2.
(6) sandbox is installed: sandbox 15 installation site is arranged according to drawing, for preventing sandbox 15 from breakking away, distribution beam 9 uses L50 × 50 angle steel welding locating slot, sandbox 15 is put into locating slot.
(7) lay-up operation platform: for easy construction, ensure construction safety, in distribution beam 9, direction across bridge lays 5cm solid wood as operation platform, at distribution beam two ends welding short steel rod, beam 9 to be allocated plugs steel pipe after laying, steel pipe height is 1.5m, laterally arranges cross bar together every 30cm, uses protection network enclosing outside railing.
(8) installing spider: for accelerating speed of application, bent cap bed die 4 lower carriage uses that [the double limb Combination Welding truss of 14 channel-section steels, because bent cap casts anchor groove stretch-draw needs, every side wing edge uses two plate racks, middle reserves stretch-draw space.Monolithic lifting during installation, [as bridging and crossbeam, position is arranged at truss vertical rod 14 channel-section steels, uses pin 7 to connect in employing after two panels is the most in place.

Claims (5)

  1. null1. the composite roof truss support of a great cantilever bent cap,It is characterized in that,Use batten plate lattice composite roof truss support,Whole strutting system is broadly divided into lower supporting leg、Composite roof truss、Distribution beam (9)、Sandbox (15) and (16) 5 modules of three footrest framves,Utilize channel-section steel and bolt that 5 modules are in turn connected into an entirety from down to up during installation,2 modules are made up of 4 lattice columns on cushion cap (1) below,Column divides lower pillar stand (5) and upper pillar stand (11),Crossbeam between lower pillar stand (5) and upper pillar stand (11) is sill (6),Upper pillar stand (11) crossbeam above is entablature (14),Entablature (14) uses 40 pairs of I-steel assembly weldings,Lay for supporting bent cap shelf bracket and arranging the distribution beam (9) of work platforms by support vertical bar position on entablature (14);Square sandbox (15) is arranged between distribution beam (9) and shelf bracket (16), shelf bracket (16) is arranged above bent cap bed die (4), entablature (14) is hinged with pin (7) by diagonal brace (10) with sill (6) termination, all connect with horizontal horizontal-associate (12) between front-back diagonal brace (10) simultaneously, and bridging (13) is set, welding beam horizontal-associate and diagonal brace (8) between front-back entablature and between sill.
  2. The composite roof truss support of great cantilever bent cap the most according to claim 1, it is characterised in that described distribution beam (9) is made up of 18a I-steel.
  3. The composite roof truss support of great cantilever bent cap the most according to claim 1, it is characterized in that, described lower pillar stand (5) uses 32c channel-section steel Combination Welding, upper pillar stand (11) uses 22b channel-section steel Combination Welding, uses [14 channel-section steels transverse upright horizontal-associate (2) connections between front-back upper pillar stand and between lower pillar stand.
  4. The composite roof truss support of great cantilever bent cap the most according to claim 1, it is characterised in that described sandbox (15) planar dimension is 35cm × 35cm, regulation altitude range is 22~32cm.
  5. The composite roof truss support of great cantilever bent cap the most according to claim 1, it is characterized in that, described diagonal brace (10), horizontal-associate (12) and bridging (13), sill (6) and crossbeam horizontal-associate and diagonal brace (8) are [28 double flute steel.
CN201620167768.2U 2016-03-04 2016-03-04 Composite truss support of big cantilever bent cap Expired - Fee Related CN205443958U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109208481A (en) * 2018-09-11 2019-01-15 中国二十冶集团有限公司 Sandbox and bent cap sectional shelf-unit mounting device
CN110184926A (en) * 2019-05-14 2019-08-30 宁波市政工程建设集团股份有限公司 A kind of public affairs rail is built together the overhead pier stud construction method of double-layer integrallyization
CN110512525A (en) * 2019-08-23 2019-11-29 中交一航局第一工程有限公司 A kind of detachable bent cap bed die bracket and its construction technology
CN113152283A (en) * 2019-10-21 2021-07-23 宁波市政工程建设集团股份有限公司 Construction method of cantilever or large-crotch-diameter support system of prefabricated small box girder type hidden cover beam of road bridge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109208481A (en) * 2018-09-11 2019-01-15 中国二十冶集团有限公司 Sandbox and bent cap sectional shelf-unit mounting device
CN110184926A (en) * 2019-05-14 2019-08-30 宁波市政工程建设集团股份有限公司 A kind of public affairs rail is built together the overhead pier stud construction method of double-layer integrallyization
CN110512525A (en) * 2019-08-23 2019-11-29 中交一航局第一工程有限公司 A kind of detachable bent cap bed die bracket and its construction technology
CN113152283A (en) * 2019-10-21 2021-07-23 宁波市政工程建设集团股份有限公司 Construction method of cantilever or large-crotch-diameter support system of prefabricated small box girder type hidden cover beam of road bridge
CN113152283B (en) * 2019-10-21 2022-06-10 宁波市政工程建设集团股份有限公司 Construction method of large-crotch-diameter supporting system of small box girder type hidden cover beam prefabricated on road and bridge

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20160810

Termination date: 20210304